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Old 08-25-2008, 12:47 AM   #1
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fresh water tank sensor

We have a 2005 sunline with a fresh water sensor that has never worked. Does anyone have a suggestion on the best way to fix the sensor? or are those sensors hopeless?
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Old 08-25-2008, 08:40 PM   #2
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I had the same problem with my 2006 T-2499. Ended up being a poor connection at the ground point. Try ckecking that.

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Old 08-25-2008, 11:59 PM   #3
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Thank you for the suggestion. Since not many folks responded it sounds like this isn't a common problem as we were fearing. I hope our problem has such an inexpensive solution. We'll give it a try. Since this is our first RV we're not sure what to expect.
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Old 08-26-2008, 05:20 AM   #4
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Hi Shelly,

I don't hear a lot of issues with the fresh water tank sensor, but there is more of a chance of black & gray water tank sensor issues due to the contents of the tanks. I have the black tank rinser, and yet my sensor reads goofy at times. Nature of the beasts I guess,

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Old 09-01-2008, 12:55 AM   #5
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how to check ground on 2363

Thanks for the suggestions! Does anyone know the best way to access the ground point for the fresh water tank on a T2363?

This site is very helpful to newbies like us. We were thinking of getting a Honda 1000W generator until I read all the generator posts. We got the 2000W as recommended by many of the experienced folks on the site.

Any help on the ground point is much appreciated!
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Old 09-01-2008, 10:02 AM   #6
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Hi Shelly

I do not have your model TT, but most of these are made very similar. I just happen to be under mine this weekend doing some work and took these 2 pics that may be helpful.



The ground wire is the little white wire in my pic coming off the lowest bottom part of the tank. It uses this as a water reference point. That white wire goes to a copper compression screw lug bolted to the frame. That copper lug at times can corrode and not make good contact.

Also the set screw that presses against the wire can get corroded to the point you cannot turn it. When this happens and you know for sure it is not making connection, well then you end up cutting the wire and replacing it. They are at most hardware stores/Lowes etc or you can use a crimp on eyelet connector. Not a lot of money. The cooper lug is $0.75 to $1.50 the crimp eyelet is like $0.15 if you have the crimp tool

To help prove out it is the ground, well first see if anything is loose. Then just take a small piece of wire and touch it to the lower ground stud on the tank, white, and then touch the other end to the next sensor stud up. On my tank it is the yellow wire. You can wrap a little wire around it (a jumper wire), it does not have to be screwed on. That should then make it read 1/3 full when you go inside and press the fresh tank sensor panel. You do not even need water in the tank to test this.

How these probes work is, as the water rises and touches each probe wire it then will indicate inside that level. You tricked it with the jumper wire.

Now if you have 1/3 level and it is now working, then something else is a not working when you add water.

But if it still is not working now you need to add 1 more jumper to check the ground reference. Take a 2nd piece of wire, wrap it around the lower white stud, (the ground,) and then go off to some part of the TT frame that is shinny metal, a bolt head or something. If everything now starts working then the copper grounding lug on the frame is having some issues.

If that is the case then unbolt the lug from the frame and sand or file the frame to make good contact and re bolt it on. If the screw is loose tighten it if you can. If the screw is so corroded it will not make contact after shining up the frame and you cannot tighten or loosen it, then a new lug one will fix that.

If this does not fix it and you want to dig deeper, let us know. If you do do you have a volt/ohm meter?

Hope this helps

John

PS As Kitty said the tank sensors generally works verses not work. The black tank is generally the other problem. They read false signals from toilet paper shorting them out inside the tank so it can read 2/3 full when the tank is empty. But there are tricks to cure that too.
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Old 09-01-2008, 07:32 PM   #7
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Re: how to check ground on 2363

Quote:
Originally Posted by shelly66
Thanks for the suggestions! Does anyone know the best way to access the ground point for the fresh water tank on a T2363?

This site is very helpful to newbies like us. We were thinking of getting a Honda 1000W generator until I read all the generator posts. We got the 2000W as recommended by many of the experienced folks on the site.

Any help on the ground point is much appreciated!
On my 2002 2363, the ground reference for the level indicators is tied into the ground for the water pump:

Best picture I have of it:

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Old 09-01-2008, 08:38 PM   #8
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AH an inside tank. Nice and clean.

Shelly, that little white ground reference wire might not be twisted properly and making connection in the wire nut of the pump. Check there. You can still do the jumper wire test like I describd for the outside tank.

That is if your looks like Franks.

Thanks for posting Frank. A pic is worth a milion words. Never thought of the inside tank option.

John
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Old 09-11-2008, 12:44 AM   #9
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thanks so much!

Thank you all for your assistance! The pictures were esp. helpful. The more mechanically inclined member of the family followed your instructions and this weekend we finally for the first time had a working fresh water sensor - hurray!

Thank you!
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